predictive intelligence with google now complete. introducing droid dna by htc. it's not an upgrade to your phone. it's an upgrade to yourself. >>> tonight the stunning and deeply shocking news from london where a nurse at the hospital where kate middleton was treated for morning sickness has taken her own life. the nurse who killed herself was the one who was tricked by prank call from two australian deejays earlier this week who pretended to be queen elizabeth and prince charles. it's a tragic turn of events. joining me is katie nicholl, correspondent for the mail on sunday. people are snickering, laughing a bit, and it's suddenly become a much more serious, awful tragedy. what do we actually know about this? >> reporter: well, i can sure you, piers, no one is snickering or laughing tonight. this story has taken a turn for the very, very worse. it's incredibly tragic. the news is that jacintha saldanha, the nurse who took the hoax call from those two deejays in australia and transferred it to the ward that catherine was staying on was found dead at her house th